The SWC is the best point-and-shoot camera out there, with the fastest „autofocus“ (if we can name it so ha ha).
Its history is very complex, as many different models were released since the SWA introduction in the 50‘s.
I am only aware of the following 2 points:
1) if you consider using it with a digital back at some point:
Earlier models than SWC/M are not compatible with a digital back - or so it was said. My understanding is that the tripod plate is in the way of the external battery or earlier backs. This probably becomes a moot point with the new CFV 50c ii, which has an internal battery.
(Side note: I tried my SWC/M with the CFV 50c ii, it works, image quality is terrific as you can expect, but it is difficult to frame as the viewfinder does not have framelines for the 33x44 sensor. Using live view is possible but cumbersome. Feel free to PM me for more details)
2) The shutter of early SWC/M with CF-type lenses is said to scratch a lens element. I never could find out whether this is urban legend or not. In my opinion it most probably is, but inspecting the lens for that before buying wouldn’t hurt...
Does someone here has more info about this?